diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in index 67d3b832dcbd6846377126c7a304f8aad6e50730..f6a7affb6ae3a0c235dfd86894702c640e1ee102 100644 --- a/include/libvirt/libvirt.h.in +++ b/include/libvirt/libvirt.h.in @@ -1215,6 +1215,13 @@ int virDomainMigrateSetMaxDowntime (virDomainPtr domain, unsigned long long downtime, unsigned int flags); +int virDomainMigrateGetCompressionCache(virDomainPtr domain, + unsigned long long *cacheSize, + unsigned int flags); +int virDomainMigrateSetCompressionCache(virDomainPtr domain, + unsigned long long cacheSize, + unsigned int flags); + int virDomainMigrateSetMaxSpeed(virDomainPtr domain, unsigned long bandwidth, unsigned int flags); diff --git a/python/generator.py b/python/generator.py index 92a7f588e610dfb476336b9c47b108e0a2684747..e4c95797e99af0c6a0957532cb872d0b72a68784 100755 --- a/python/generator.py +++ b/python/generator.py @@ -444,6 +444,7 @@ skip_impl = ( 'virNodeGetCPUStats', 'virNodeGetMemoryStats', 'virDomainGetBlockJobInfo', + 'virDomainMigrateGetCompressionCache', 'virDomainMigrateGetMaxSpeed', 'virDomainBlockStatsFlags', 'virDomainSetBlockIoTune', diff --git a/src/driver.h b/src/driver.h index 71b71f6a16fe08ad3decad43aae85397deffbe61..f60bf9372156dae3035728e11fbebaaa6973d068 100644 --- a/src/driver.h +++ b/src/driver.h @@ -604,6 +604,15 @@ typedef int (*virDrvDomainMigrateSetMaxDowntime)(virDomainPtr domain, unsigned long long downtime, unsigned int flags); +typedef int + (*virDrvDomainMigrateGetCompressionCache)(virDomainPtr domain, + unsigned long long *cacheSize, + unsigned int flags); +typedef int + (*virDrvDomainMigrateSetCompressionCache)(virDomainPtr domain, + unsigned long long cacheSize, + unsigned int flags); + typedef int (*virDrvDomainMigrateSetMaxSpeed)(virDomainPtr domain, unsigned long bandwidth, @@ -1069,6 +1078,8 @@ struct _virDriver { virDrvDomainGetJobStats domainGetJobStats; virDrvDomainAbortJob domainAbortJob; virDrvDomainMigrateSetMaxDowntime domainMigrateSetMaxDowntime; + virDrvDomainMigrateGetCompressionCache domainMigrateGetCompressionCache; + virDrvDomainMigrateSetCompressionCache domainMigrateSetCompressionCache; virDrvDomainMigrateGetMaxSpeed domainMigrateGetMaxSpeed; virDrvDomainMigrateSetMaxSpeed domainMigrateSetMaxSpeed; virDrvDomainEventRegisterAny domainEventRegisterAny; diff --git a/src/libvirt.c b/src/libvirt.c index f5ae26cf489240c69dabfd44598d98e49dcb3e09..934997a3a4ca344c72887d1250a44a2f1f792925 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -17551,6 +17551,101 @@ error: return -1; } +/** + * virDomainMigrateGetCompressionCache: + * @domain: a domain object + * @cacheSize: return value of current size of the cache (in bytes) + * @flags: extra flags; not used yet, so callers should always pass 0 + * + * Gets current size of the cache (in bytes) used for compressing repeatedly + * transferred memory pages during live migration. + * + * Returns 0 in case of success, -1 otherwise. + */ +int +virDomainMigrateGetCompressionCache(virDomainPtr domain, + unsigned long long *cacheSize, + unsigned int flags) +{ + virConnectPtr conn; + + VIR_DOMAIN_DEBUG(domain, "cacheSize=%p, flags=%x", cacheSize, flags); + + virResetLastError(); + + if (!VIR_IS_CONNECTED_DOMAIN(domain)) { + virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__); + virDispatchError(NULL); + return -1; + } + + conn = domain->conn; + + virCheckNonNullArgGoto(cacheSize, error); + + if (conn->driver->domainMigrateGetCompressionCache) { + if (conn->driver->domainMigrateGetCompressionCache(domain, cacheSize, + flags) < 0) + goto error; + return 0; + } + + virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__); +error: + virDispatchError(conn); + return -1; +} + +/** + * virDomainMigrateSetCompressionCache: + * @domain: a domain object + * @cacheSize: size of the cache (in bytes) used for compression + * @flags: extra flags; not used yet, so callers should always pass 0 + * + * Sets size of the cache (in bytes) used for compressing repeatedly + * transferred memory pages during live migration. It's supposed to be called + * while the domain is being live-migrated as a reaction to migration progress + * and increasing number of compression cache misses obtained from + * virDomainGetJobStats. + * + * Returns 0 in case of success, -1 otherwise. + */ +int +virDomainMigrateSetCompressionCache(virDomainPtr domain, + unsigned long long cacheSize, + unsigned int flags) +{ + virConnectPtr conn; + + VIR_DOMAIN_DEBUG(domain, "cacheSize=%llu, flags=%x", cacheSize, flags); + + virResetLastError(); + + if (!VIR_IS_CONNECTED_DOMAIN(domain)) { + virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__); + virDispatchError(NULL); + return -1; + } + + conn = domain->conn; + if (conn->flags & VIR_CONNECT_RO) { + virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__); + goto error; + } + + if (conn->driver->domainMigrateSetCompressionCache) { + if (conn->driver->domainMigrateSetCompressionCache(domain, cacheSize, + flags) < 0) + goto error; + return 0; + } + + virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__); +error: + virDispatchError(conn); + return -1; +} + /** * virDomainMigrateSetMaxSpeed: * @domain: a domain object diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms index 361408fd82efdc6789f828022082ae91b5f09dde..ab993edeaf17beff2b9288ebae3aae79817448b2 100644 --- a/src/libvirt_public.syms +++ b/src/libvirt_public.syms @@ -606,6 +606,8 @@ LIBVIRT_1.0.2 { LIBVIRT_1.0.3 { global: virDomainGetJobStats; + virDomainMigrateGetCompressionCache; + virDomainMigrateSetCompressionCache; virNodeDeviceLookupSCSIHostByWWN; } LIBVIRT_1.0.2;